Walrus Audio Mantle Analog Bass Preamp // D.I.

Walrus Audio Mantle: Premium Analog Bass Preamp and D.I. Co-Designed with Ian Martin Allison for Ultimate Tonal Definition

The Walrus Audio Mantle Analog Bass Preamp // D.I. is a tour-grade, high-end analog preamplification and direct insert system developed in close collaboration with renowned bassist Ian Martin Allison. Engineered to deliver pristine studio-quality audio, the Mantle features a custom-wound Sapphire Transformer developed exclusively by Walrus Audio to inject rich analog warmth, fat low-end architecture, and organic harmonic overtones into your signal. Driven by a lightning-fast JFET Input Buffer that preserves the absolute nuance and transient clarity of your instrument, this pedal boasts a highly specialized bass EQ layout and customizable filters. Operating at a high-voltage internal +24V rail for immense headroom, the Mantle is the definitive tonal command center for studio tracking sessions and high-profile live stage performances alike.

Key Features

• Custom-Wound Sapphire Transformer: Outfitted with a proprietary Sapphire transformer that delivers up to +23 dB of pure transformer-driven gain, enriching your bass lines with magnificent analog saturation and punch.
• Pro JFET Buffer & Massive +24V Headroom: Features a high-fidelity JFET input buffer for exceptional signal retention, backed by an internal +24V voltage rail that provides massive headroom to handle heavy slaps and aggressive dynamic spikes without clipping.
• Acoustic Tailoring with EQ & Selectable Filters: Offers precise Bass and Treble EQ controls with boost/cut capabilities. The Bass knob acts as a multi-frequency High-Pass Filter (HPF), while the Treble control functions as an assignable Low-Pass Filter (LPF) for strategic frequency management.
• Transformer-Isolated XLR Output: Equipped with a premium balanced XLR output driven by its own output transformer, ensuring a clean, noise-free, and powerful direct feed to any PA system or recording audio interface.
• Essential Utilities for Road & Studio: Fully loaded with an Active/Passive Pad switch to optimize input levels for any bass pickup configuration, alongside a dedicated Ground Lift switch to instantly terminate unwanted ground loop hums.

The Ultimate Dynamic Foundation Engineered to Make Your Bass Cut Through the Mix

When your music demands a bulletproof, high-headroom direct signal that retains the organic acoustic texture of your bass, the Walrus Audio Mantle delivers with world-class authority. Eliminating cold digital tracking and weak signals, this analog powerhouse acts as both a tone-sculpting preamp and a professional-grade DI box. Don’t let thin tones or messy ground loops hold back your groove—take complete control of your low-end dynamics and upgrade your rig with the Walrus Audio Mantle today.